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CVE-2015-4852: Oracle WebLogic Server Deserialization of Untrusted Data Vulnerability

CVE-2015-4852 is rated critical with a CVSS v3.1 base score of 9.8 and affects Oracle WebLogic Server, along with 2 other products in NVD’s configuration data. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available. CISA added it to its Known Exploited Vulnerabilities catalog on 2021-11-03, which means exploitation in the wild has been observed.

Vulnerability description

The WLS Security component in Oracle WebLogic Server 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0 allows remote attackers to execute arbitrary commands via a crafted serialized Java object in T3 protocol traffic to TCP port 7001, related to oracle_common/modules/com.bea.core.apache.commons.collections.jar. NOTE: the scope of this CVE is limited to the WebLogic Server product.

Severity breakdown

CVSS v3.1 9.8: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

• Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
• Attack complexity: Low. No special conditions; the attack can be repeated reliably.
• Privileges required: None. No account or prior access is needed.
• User interaction: None. No action from any user is needed.
• Scope: Unchanged. Impact stays within the vulnerable component.
• Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
• Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
• Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-502: Deserialization of Untrusted Data

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected products

• Oracle Weblogic Server: 10.3.6.0.0; 12.1.2.0.0; 12.1.3.0.0; 12.2.1.0.0
• Oracle Virtual Desktop Infrastructure: up to and including 3.5.2
• Oracle Storagetek Tape Analytics Sw Tool: 2.3

References

• http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html
• http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
• http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
• http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
• http://www.oracle.com/technetwork/topics/security/alert-cve-2015-4852-2763333.html
• http://packetstormsecurity.com/files/152268/Oracle-Weblogic-Server-Deserialization-Remote-Code-Execution.html
• http://www.openwall.com/lists/oss-security/2015/11/17/19
• https://www.exploit-db.com/exploits/42806/
• https://www.exploit-db.com/exploits/46628/
• http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-4852
• http://www.securityfocus.com/bid/77539
• http://www.securitytracker.com/id/1038292